Pumping power



Dec. 3, 1935. E LE-ONARD 2,022,918

PUMPING POWER Filed Jan. 31, 1954 I s Sheets-Sheet 1 INVENTOR: P0 y f. A 0/VA RD,

4 ATTORNEY.

Dec. 3, 1935. R, E, LEONARD 2,022,918

PUMPING POWER Filed Jan. 51, 1954 3 Sheets-Sheet 2 FzZyZ I N VEN TOR. For f. LEON/4RD,

ATTORNEY.

Dec. 3, 1935. R LEONARD 2,022,918

PUMPING POWER Filed J an. 51, 1934 3 Sheets-Sheet 5 f V I 70 INVENT0R: F0 Y E L EO/VA RD,

ATTORNEY.

Patented Dec. 3, 1935 UNITED STATES PATENT OFFICE 5 Claims.

The invention is a pumping power for operating deep well reciprocating pumps, but it may be used for other purposes.

The general object of the invention is to provide a simple, practical and efficient pumping power for effecting a long and slow stroke of the sucker rod of a deep well reciprocating pump.

Another object is to provide a pumping power of the character stated by means of which the stroke of a sucker rod of a deep well pump may be given a more rapid movement in one direction than in the other direction, so that the sucker rod of the pump may be moved upwardly slowly to perform its work of pumping, and moved downwardly more rapidly on its return stroke, whereby the pumping efliciency of the pump is increased.

A further object is to provide a pumping power of the character stated including a drive pinion, a continuous segmental gear in mesh with said pinion, a pull line power pulley driven by said segmental gear, and novel means for maintaining said pinion continuously in mesh with said segmental gear.

Other objects will appear hereinafter.

The invention is illustrated in the annexed drawings which form a part of this specification and in which,

Fig. 1 is a vertical longitudinal section of one form of my invention taken on line l-l of Fig. 2. Fig. 2 is a horizontal section taken on line 2-2 of Fig. 1.

Fig. 3 is a transverse vertical section taken on line 3-3 of Fig. 2.

Fig. 4 is a transverse vertical section taken on line 4-4 of Fig. 5, showing, on an enlarged scale, a fragment of the segmental gear, the driven pinion in mesh with said gear and the guide for said pinion of the form of my invention shown in Fig. 1.

Fig. 5 is a longitudinal vertical section taken on line 5-5 of Fig. 4.

Fig. 6 is a plan view partly in section of another form of my invention.

Fig. 7 is a fragmentary vertical longitudinal section taken on line 1'l of Fig. 6.

Fig. 8 is a horizontal section taken on line 8-8 of Fig. 7.

Fig. 9 is a side elevation of another form of my invention.

Fig. 10 is an end elevation of Fig. 9.

Fig. 11 is a cross section taken on line ll-l| of Fig. 9.

Fig. 12 is a side view of the drive gearing of the form of my invention shown in Figs. 9 and 10.

Fig. 13 is a longitudinal section taken on line |3-I3 of Fig. 11.

, Corresponding parts are designated by the same reference characters in all the figures of the drawings.

My invention, as illustrated in Figs. 1 to 5 inclusive comprises primarily an extensible and contractable drive shaft I, a drive pinion 2 on one end of said drive shaft, a double and continuous segmental gear 3 in mesh with said 10 pinion, a driven shaft 4 on which said segmental gear wheel is mounted, a pull line pulley 5 secured on said driven shaft, and a pull line 6 secured extending over the periphery of said pulley and secured to said pulley at I.

The drive shaft l is formed in four sections 8, 9, I0 and II, the section 9 being a square male shaft member and the section II] being a square tubular female member within which said male member telescopes, whereby said female member is caused to rotate with said male member, whether the drive shaft is extended or contracted. The sections 8 and 9 are connected together by a universal joint l2 and the sections l0 and H are connected together by a universal 25 joint l3 for allowing the shaft section I I to be moved laterally with relation to the shaft section 8 for the purpose hereinafter more fully described. The shaft section II is journaled in a slide bearing I4 slidably mounted in a slideway 30 I5 to slide laterally of the segmental gear 3, said slideway being mounted upon a main frame [6. The drive shaft section 8 is journaled in bearings 17 and 18 in a gear casing 19 in which are located a worm gear 20 and a worm 2| in mesh with said 35 worm gear, said worm gear being secured on said drive shaft section 8, and said worm being secured on the motor shaft 22 of an electric motor 23, whereby the drive shaft l is driven by said motor. The driven shaft 4 is journaled in bearings 24. and 25 on the main frame H5.

The segmental gear 3 is formed with gear teeth 26 which are spaced around both sides of said gear and around the ends thereof, and shrouds 21 and 28 are formed on said gear 3, at the inner 45 and outer ends respectively of said teeth, which shrouds extend around both sides and the ends of said gear, there being roller disks 29 and 30 on the drive shaft section I I at the inner and outer ends respectively of the drive pinion 2, which 50 disks travel on said shrouds 21 and 28 respectively and maintain the teeth of said pinion in proper meshing relation with the teeth of the segmental gear 3, so that the teeth of said pinion cannot meshtoo deeply with the teeth of said gear and 55 ing the drive pinion 2 and disks 23 and 35 on said reduced end portion of said drive shaft section with the disk 35 against the shoulder 32.

Arcuate pinion guides 34 and 35 are formed on the segmental gear 3 for guiding the drive pinion 2 around the ends of the gear. 7

The operation of my invention as above described is as follows:

Power being applied to the motor 23, said motor,

through its shaft 22, worm 2 l, worm gear 25 and drive shaft l, rotates the drive pinion 2, which engages the teeth 26 of the segmental gear 3, f rst on one side of said gear, then around one end of said gear, and then on the other side of said gear, and oscillates or rotates said gear, driven shaft 4 and pulley 5, for nearly a complete revolution, first in one direction and then in the other direction, during which operation the pull line 5 is pulled by said pulley wheel, in one direction, a distance nearly equal to the length of the circumference of said pulley wheel, for'lifting the sucker rod of a deep well pump, said rod descending under the influence of the weight of the pump piston and its own weight, thus reciprocating said sucker rod and the pump piston.

The slide bearing l4 and slideway [5 allow the drive pinion 2 to be shifted from one side of the segmental gear 3 to the other side thereof, so that the guides 34 and 35 may guide the pinion around the ends respectively of said gear by the engagement of the roller disks 29 and 39 with 'said guides respectively, whereby the rotary movement of the segmental gear 3 and the pulley wheel is reversed and the movement of the pull line 6 is reversed.

In the form of my invention illustrated in Figs. 6, 7 and 8 the construction is the same as that shown in Figs. 1 to 5 inclusive, except that two drive pinions 45 and 4| are secured on the drive shaft section II, which pinions mesh respectively with two independent segmental racks 42 and 43 on opposite sides of the segmental gear wheel 3a secured on the driven shaft 4, which racks extend half way around the ends of said gear wheel, and the rack 42has a greater radius than the rack 43. Said segmental gear wheel 3a is formed with pinion guides 34a and 35a for guiding the drive pinions 40 and 4| around the ends thereof into and out of mesh with the racks 42 and 43 respectively. 7

In the operation of this form of my invention the pinion 40 meshes with the rack 42 to rotate the segmental gear wheel 3a and pulley wheel 5 'in one direction, while the pinion 4| meshes with the rack 43 to rotate said gear wheel and pulley in the opposite direction, when the pinion 40 has escaped one end of the rack 42 and the pinions 45 and 4| have been guided around the corresponding end of said gear wheel by the engagement of the roller disks 29 and 30 with the guide 34a, said roller disks engaging the guide 35a, as the pinion 4| escapes the opposite end of the rack 43, and guiding the pinions 40 and 4| around the corresponding end of said gear wheel until the pinion 40 meshes again with the adjoining end of the rack .42, whereupon the above described operations are repeated. The engagement of the pinion 40 with the rack 42 causes a slower rotary movement of the gear wheel 3 in one direction than the rotary movement of the gear wheel in the opposite direction by the engagement of the pinion 4| with the rack 43. The slower move- 5 ment of the segmental gear 3a and the corresponding movement of the pulley 5 and pull line 6 are utilized for lifting the sucker rod and piston of a deep well pump, while the faster movement of the segmental gear, pulley and pull line in the opposite direction are utilized for lowering the pump sucker rod and piston on their return [stroke to their initial pumping position.

In the form of my invention shown in Figs. 9 to 13 inclusive a continuous, reversing segmental-gearwheel 55 is slidably mounted on a driven shaft 5| by means of a ball bearing 52, the portion 53 of said shaft on which the hub 54 of said gear wheel slides being square, and the hub having a square opening 55 to receive said square portion of said shaft and said ball bearing. The gear wheel 50 is formed with teeth 56 a and 51 on its side faces respectively and with teeth 58 and 59 on the ends respectively of the gear Wheel, said end teeth leading from the teeth 56 to the teeth 5? and from the teeth 51 to the teeth 56 around the ends respectively of the gear wheel. On the gear wheel 50 are formed end guides 60 andfil and a shroud 62 is formed on the gear wheel at the inner end of the gear teeth of a vertical shaft 64 meshes with the teeth 56 57, 58 and 58 of the gear wheel 50. The pinion shaft 64 is journaled in a gear housing 65 and is driven by a motOr 66 through the medium of the motor shaft 61, pinion 68 on said motor shaft, gear 69, pinion I0, worm H and worm gear 22, the pinion "Ill and worm being formed integral with each other to rotate together and the worm gear 12 being secured on the pinion shaft 5 4. The pinion 63 is formed with a shroud T3 at its upper end for engaging the shroud 62 on the gear wheel 50 to prevent too deep a mesh of the teeth of the pinion and the teeth of the gear wheel. A roller 14 is journaled on the pinion shaft 64 for engaging the guides 60 and BI for maintaining the teeth of the pinion 63 in mesh with the teeth 58 and 59 respectively of the gear wheel 5|] as the pinion passes around the ends respectively of the gear wheel from one side thereof to the other. The driven shaft 5| is journaled in bearings 15 and 16 on the frame H of the machine. Vertical slide bearings and 19 are formed on the frame '1 in which slides and BI are respectively mounted, which slides carry rollers 82 and 83 respectively engaging cams 84 and 85 respectively, which cams are secured on a cam shaft '88 journaled in the end of which is connected to one end of a pair 65 of links 98 and 9|, which links are'connected respectively at their other ends to the bearing 15 of the driven shaft 5| and to the 'hub 54 of the gear wheel 50. The upper end of the slide 8| is connected to one end of a link 92, the other end 70.

of which is connected to one'end of a pair of links 93 and 94, which links are 'connect'edrespectively at their outer ends to the bearing 16 of the driven shaft 5] and to the hub 54 of the gear wheel 50. A power pulley 95 is secured on 75 the driven shaft 5| and a pull line 95 is secured to said power pulley.

The operation of this form of my invention is as follows:

The pinion 63 being rotated by the motor 66, through motor shaft 61, pinion 68, gear 69, pinion 10, worm I l, worm gear 12 and verticle shaft 84, said pinion meshes successively with the gear teeth 56, 53, 51 and 59 etc. and oscillates the segmental gear 59, shaft 5| and power pulley 95, and the pull line 96 connected to the sucker rod of a deep well pump operates said pump. As the pinion 63 meshes with the end teeth 58 the cams 84 and 85, engaging the cam rollers 82 and 83 respectively, lower the slide and raise the slide 8|, whereupon the gear wheel 5|] is shifted to the left on the driven shaft 1| by said slide 80, and the links 89, and 9|, and the pinion 53 passes around the end of the segmental gear wheel and meshes with the teeth 5?. As the pinion 63 meshes with the teeth 59 the cams 84 and 85, engaging the cam rollers 82 and 83 respectively raise the slide 80 and lower the slide 8 I, whereupon the gear wheel 59 is shifted to the right on the driven shaft 5| by the slide 8i and links 92, 93 and 94, and the pinion 53 passes around the end of the segmental gear wheel and meshes with the gear teeth 55.

I claim as my invention:

1. In combination, a drive shaft, a driven shaft, a wheel on said driven shaft, means to enable said drive shaft to oscillate said wheel and driven shaft at one speed in one direction and at another speed in the opposite direction, a pulley secured on said driven shaft, and a pull line extending over the periphery of said pulley and secured to said pulley for operating the sucker rod of a deep well pump.

2. In combination, a drive shaft, a driven shaft, a pair of pinions secured on said drive shaft, a gear Wheel formed with a pair of segmental racks of different radii for meshing respectively with said pinions for oscillating said gear wheel at a greater speed in one direction than in the opposite direction, a pulley secured on said drive shaft, and a pull line extending over said pulley and secured thereto for operating a deep well pump.

3. In combination, a drive shaft, a driven shaft, a pair of pinions secured on said drive shaft, a segmental gear wheel on said driven shaft formed with a pair of segmental racks on opposite sides thereof and extending half way around the ends thereof, with which racks said pinions respectively mesh, means for guiding said pinions around the ends of said segmental gear wheel to enable one pinion to engage the end of one rack as the other pinion escapes the adjacent end of the other rack, a pulley secured on said driven shaft, and a pull line extending over said pulley and secured thereto.

4. In combination, a segmental gear formed with teeth extending around each side and around the ends thereof, a driven shaft on which said gear is mounted to slide and to rotate therewith, a drive shaft; a drive pinion secured on said drive shaft in mesh with the teeth on said segmental gear, means for shifting said segmental gear wheel on said driven shaft to enable said pinion to travel around the ends of said gear for reversing the movement of said gear, means for guiding said pinion around the ends of said gear and maintaining the teeth of said pinion in mesh with the teeth around the ends of said gear, a pulley secured on said driven shaft and a pull line extending over said pulley and secured thereto.

5. In combination, a continuous reversible segmental gear wheel formed with teeth extending around both of its sides and its ends, a driven shaft on which said gear wheel is secured, a drive pinion in mesh with said gear wheel, a slideway extending transversely of said gear wheel, a slide bearing mounted to slide in said slideway, a drive shaft formed in four sections, one of said sections being journaled in said slide bearing and said drive pinion being secured on said section, another section of said drive shaft being journaled in a fixed bearing, the other two sections of said drive shaft telescoping one within the other and being constructed and arranged to rotate together, one of said telescoping sections being universally connected to the section of the drive shaft on which said pinion is secured, the other telescoping section being universally connected to the section of the drive shaft which is journaled in said fixed bearing, means for driving said latter section of said drive shaft, and means to enable said driven shaft to apply power.

ROY E. LEONARD. 

